Too funny Rob, that's what I feel like using sometimes.

I am having a mice/rat problem right now too, they are in my house though x(

I think it's due to the cold weather and the fact that I'm surrounded by fields.

Anyway, I have been at war with them for awhile now, so I've been learning allot. Best thing you can do is find their point of entry into your boat, they more than likely are climbing up your tires. Make sure those are the only three spots where they can gain access, don't have your boat up against a tree,house or even under a tree if you can help it. Next is starting defending those three spots anyway you can, set traps around each tire or make a removable barrier that you can put around your tires but mice can't get over.

You will have to be creative and relentless, because they are both and much more.

Good luck!